Hi @paq_phil - you received a reply from Daniel Spreadbury a few days ago in your previous thread on this topic:
Questions are always welcomed here, but it’s politely requested that bumping is avoided as a courtesy.
At the moment, as far as I’m aware there’s not an automatic way to prevent a note being automatically respelled in other full score layouts.
You could perhaps set up one of your “full scores” using a part layout (just with every player assigned to it, set it to use the Default Full Score master page set, set the page size and margins as you would for a full score etc etc) so that when you respell accidentals in that layout, the other full score (that’s actually a full score-type layout) isn’t affected?